Normal USB charging is something like 5v at 0.5amps, and fast charging is up to 12v at 3amps.

If the device is setup for the fast charge, the charge circuit in the device is setup with a battery that can handle the faster charge rate.... unless you're samsung.

I have checked its feature and it says...

"Lightning ChargerThe new 2nd-generation BIOSTAR RACING motherboards will be the first to have the new Lightning Charger which helps the battery of enabled devices, including smartphones or tablets, to achieve up to 75% charge in just 30 minutes. It supports QC2.0 (12V/1.5A output), Apple Mode (5V /2.4A) and BC1.2."

I don't have a samsung, my phone is an Asus Zenfone 5. It would be helpful if i could take advantage of the feature